Dry-mixed mortar drying device
By designing the spiral blade structure and guide barrel control of the inner cylinder, the middle cylinder and the outer cylinder, the problem of falling during sand transportation is solved, and the drying path is adjusted according to the moisture content is achieved, and the drying effect and efficiency are improved.
Patent Information
- Application Number
- CN202422218462.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing dry-mixed mortar drying device is prone to falling off during the sand conveying process, and the drying efficiency cannot be adjusted according to the moisture content of the sand, affecting the drying effect and efficiency.
A inner cylinder, middle cylinder and outer cylinder are designed in sequence from the inside to the outside, and a drying device driven by spiral blades and motors are provided to control the sand conveying path through the guide cylinder and the feed pipe, and the protective shell and roller ring structure are used to improve the conveying stability and drying effect.
The conveying effect and drying efficiency of the sand are improved, and the drying path can be adjusted according to the moisture content of the mortar to ensure the drying effect and construction quality of the sand.
Smart Images
Figure CN223121835U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mortar drying equipment, and particularly relates to a dry-mixed mortar drying device. Background Technique
[0002] Dry-mixed mortar is a composite building material, which is formed by mixing cement, sand, fillers and various additives in a certain proportion. During the production process, the sand needs to be dried because the dried sand has better fluidity after being sieved by the mesh of the screening machine, which can ensure the quality and stability of the mortar. Compared with wet-mixed mortar, the drying process of dry-mixed mortar makes its sand have better fluidity, thus making it easier to be sieved and avoiding quality problems caused by differences in particle diameter. In addition, the dried sand is used by adding water at the construction site and used immediately after mixing, which not only improves the construction efficiency, but also ensures the uniformity and quality stability of the mortar. The drying process of dry-mixed mortar also helps to improve its construction performance. The dried sand can be better mixed with cement and other additives to form a uniform mixture, thus improving the water retention, workability and setting time and other construction performances of the mortar. This material is widely used in construction projects, including multiple fields such as masonry, plastering, flooring and waterproofing. Its drying process is of great significance for ensuring project quality and improving construction efficiency.
[0003] The basic principle of sand drying is to send the sand to be dried into a long cylinder dryer. At the same time, hot air is sent into the long cylinder dryer. Under the rotation of the rotating main body of the long cylinder dryer, the sand in the long cylinder dryer is lifted and advanced forward by the angled blades inside the rotating main body of the long cylinder dryer. During the process of being lifted and falling, the sand in the long cylinder dryer is heated by the hot air and the moisture contained inside is evaporated, thereby drying the sand in the long cylinder dryer. And the dried sand is pushed to the discharge port of the long cylinder dryer, so that the sand in the long cylinder dryer can be discharged, while the water vapor is discharged from the air outlet holes of the long cylinder dryer. Therefore, the drying effect of the sand is directly proportional to the length of the rotating main body of the long cylinder dryer and the power of air heating. That is to say, the longer the length of the rotating main body of the long cylinder dryer and the greater the power of air heating, the better the drying effect of the dried sand. However, increasing the power of air heating will increase the drying cost, and extending the length of the main shaft of the long cylinder dryer will lead to an increase in the occupied production space. In order to reduce the cost of dry sand per unit output, increasing the contact time between the sand and the hot air and reducing heat dissipation have become the main methods to reduce costs. Therefore, a three-pass drum dryer is introduced to achieve the reduction of the cost of dry sand per unit output. The three-pass drum dryer includes an outer cylinder, a middle cylinder and an inner cylinder which are sequentially sleeved from the outside. First, the sand to be dried and the hot air are both conveyed into the inlet of the inner cylinder, lifted and advanced forward by the angled blades, so that the sand is conveyed from the inner cylinder to the middle cylinder, then the sand in the middle cylinder is conveyed to the outer cylinder, and finally the sand in the outer cylinder is conveyed to the outlet of the outer cylinder to discharge the dried sand. By changing the conveying stroke of the sand, the drying efficiency of the sand is improved, so that the purchased sand can be easily adjusted to the required moisture index. During the process of the sand entering the inner cylinder through the conveying pipeline, the outer cylinder, the middle cylinder and the inner cylinder are all in a rotating state, which may cause the sand to fall into the outer cylinder or the middle cylinder during transportation, which may affect its drying effect. However, during the process of the sand entering the inner cylinder through the conveying pipeline, since the outer cylinder, the middle cylinder and the inner cylinder are all in a rotating state, it is difficult for the conveying pipeline to contact the rotating inner cylinder, so that the sand will fall into the outer cylinder or the middle cylinder during transportation to the inner cylinder, thus affecting the drying effect of the sand. In addition, the moisture content of the purchased sand is different. For the three-pass drum dryer, it is impossible to adjust the drying efficiency according to the moisture content of the sand. Therefore, when drying the sand with a lower moisture content, a higher drying efficiency cannot be achieved. Therefore, there is room for improvement in the dry-mixed mortar drying device to improve the sand conveying effect and be able to change the drying path for wider application and promotion of the dry-mixed mortar drying device. Summary of the Invention
[0004] In view of the deficiencies of the prior art, the present utility model provides a dry-mixed mortar drying device with good sand conveying effect and convenient for changing the drying path, which is used to overcome the defects in the prior art.
[0005] The technical solution adopted by the utility model is as follows: A drying device for dry-mixed mortar, which includes an inner cylinder, a middle cylinder and an outer cylinder sleeved from the inside to the outside in sequence. Spiral blades are arranged in the inner cylinder, the middle cylinder and the outer cylinder. A support is rotatably arranged on the outer cylinder, and a motor for driving the outer cylinder to rotate is arranged on the support. Sealing rings and sealing plates are respectively arranged at both ends of the outer cylinder. Both ends of the outer cylinder, the middle cylinder and the inner cylinder are respectively installed on the sealing plate and the sealing ring. A plurality of discharge ports are respectively arranged at one end of the outer cylinder and the inner cylinder close to the sealing plate and at one end of the middle cylinder close to the sealing ring. A first material guiding cylinder is arranged on the outer side of the sealing ring, and a plurality of through grooves are arranged at the edge of the sealing ring. The first material guiding cylinder is communicated with the outer cylinder through the through grooves. A second material guiding cylinder is sleeved inside the sealing ring, and the second material guiding cylinder is communicated with the inner cylinder. The second material guiding cylinder is located inside the first material guiding cylinder close to the sealing ring. Both the second material guiding cylinder and the first material guiding cylinder are installed on the sealing ring. The diameters of the first material guiding cylinder and the second material guiding cylinder gradually become smaller along the direction away from the sealing plate. A feed pipe is movably sleeved inside the second material guiding cylinder, and a fixed pipe is movably sleeved on the feed pipe. A bolt is threadedly sleeved on the side wall of the fixed pipe, and the fixed pipe is clamped on the feed pipe through the bolt. The fixed pipe is installed on the support.
[0006] Preferably, two protective shells with one side open are movably sleeved on the outer cylinder. The open ends of the two protective shells are respectively sleeved on both sides of the outer cylinder. The sealing plate and the sealing ring are respectively located inside the two protective shells. The fixed pipe is installed on the protective shell close to the sealing ring. The inner cavity of the fixed pipe is communicated with the inner cavity of the protective shell. An air inlet pipe is obliquely arranged on one side of the fixed pipe away from the protective shell. The bottom end of the air inlet pipe is installed on the side wall of the feed pipe. The inner cavity of the air inlet pipe is communicated with the inner cavity of the feed pipe. A discharge hopper and an air outlet pipe are respectively arranged on the protective shell close to the sealing plate. The top end of the discharge hopper is located below the discharge port opened on the outer cylinder. The air outlet pipe is located above the outer cylinder. Both the air outlet pipe and the discharge hopper are installed on the protective shell. The inner cavities of the air outlet pipe and the discharge hopper are both communicated with the inner cavity of the protective shell.
[0007] Preferably, the feed pipe adopts an L-shaped structure. The vertical pipe of the feed pipe is located on the side of the fixed pipe away from the sealing ring. A discharge groove is arranged on one side of the feed pipe close to the sealing ring. The discharge groove is opened at the bottom of the horizontal pipe of the feed pipe. A baffle is arranged on one side of the discharge groove close to the sealing ring. The baffle is installed on the feed pipe.
[0008] Preferably, two roller rings are sleeved on the outer cylinder. The two roller rings are respectively installed on both sides of the outer cylinder. Frame racks are respectively arranged on both sides of the roller rings. The frame racks are installed on the support. Roller wheels are rotatably arranged on the frame racks. The top of the roller wheels is in contact with the bottom of the roller rings.
[0009] Preferably, limiting wheels are respectively horizontally arranged on both sides of the roller rings. The limiting wheels are in contact with the side surfaces of the roller rings. A fixing frame is arranged below the limiting wheels. The fixing frame is installed on the support. The limiting wheels are rotatably arranged on the fixing frame.
[0010] Preferably, a gear ring is sleeved on the outer cylinder. A gear is meshed with one side of the gear ring. A speed reducer is arranged between the gear and the motor. The gear is mounted on the conveying shaft of the speed reducer. The input shaft of the speed reducer is connected to the driving shaft of the motor. The motor and the speed reducer are both mounted on the bracket.
[0011] Preferably, a plurality of connecting plates are arranged between the roller ring and the outer cylinder and between the gear ring and the outer cylinder. The plurality of connecting plates are evenly distributed along the circumferential direction of the outer cylinder on the outer cylinder. The inner side of the connecting plate is mounted on the outer cylinder, and the outer side of the connecting plate is mounted on the gear ring or the roller ring.
[0012] Preferably, the plurality of discharge ports are evenly distributed along the circumferential direction of the outer cylinder on the side wall of the outer cylinder, the middle cylinder or the inner cylinder. The spiral blade is located on one side of the discharge port. A material lifting plate is arranged between adjacent discharge ports. The material lifting plate is mounted on the inner wall of the outer cylinder, the middle cylinder or the inner cylinder.
[0013] The beneficial effects of the utility model are as follows: First of all, the motor arranged in the utility model drives the inner cylinder, the middle cylinder and the outer cylinder to rotate together, and the spiral blade drives the sand to be lifted and moved, so as to dry the sand. Through the discharge ports respectively opened on the inner cylinder, the middle cylinder and the outer cylinder, it is convenient for the sand to be conveyed along the inner cylinder, the middle cylinder and the outer cylinder in sequence, so as to increase the drying distance of the sand, thereby improving the drying effect of the sand. And the first guide cylinder and the second guide cylinder arranged are used to guide the conveyance of the sand, so as to prevent the sand from falling out, thereby improving the sand conveyance effect. Moreover, by adjusting the clamping position of the feed pipe on the fixed pipe, the communication between the feed pipe and the first guide cylinder or the second guide cylinder can be controlled, so that according to the moisture content of the mortar, the feed pipe can convey the mortar into the inner cylinder or the outer cylinder. The sand with lower moisture content is conveyed into the outer cylinder through the feed pipe for rapid drying, while the sand with higher moisture content is conveyed into the inner cylinder through the feed pipe, so that the sand with higher moisture content is dried through the inner cylinder, the middle cylinder and the outer cylinder, so as to ensure the drying effect of the mortar.
[0014] Secondly, the protection shell arranged in the utility model protects the ends of the inner cylinder, the middle cylinder and the outer cylinder, the sealing plate and the sealing ring. Through the air inlet pipe arranged on the feed pipe, it is convenient to use the air inlet pipe to convey hot air into the feed pipe. By installing an air outlet pipe and a discharge hopper on the protection shell, it is convenient to discharge the sand and the hot air. And through the discharge slot opened on the feed pipe and the baffle plate arranged on one side of the discharge slot, the sand conveyed by the feed pipe is restricted, so that the sand falls into the first guide cylinder or the second guide cylinder, so as to improve the stability of the sand conveyance.
[0015] Again, in the present utility model, through the arranged roller rings, roller wheels and frame, the outer cylinder, the middle cylinder and the inner cylinder are rotatably arranged on the supports through the roller rings and the roller wheels. Through the arranged limiting wheels and fixing frames, the side walls of the roller rings are constrained to prevent the roller rings from slipping off the roller wheels. Moreover, in the present utility model, through the arranged gear rings, reducers and gears, it is convenient to drive the outer cylinder, the middle cylinder and the inner cylinder to rotate by means of a motor.
[0016] In addition, in the present utility model, through the arranged connecting plates, the connection between the buffer roller rings or gear rings and the outer cylinder is buffered to avoid hard contact between the roller rings or gear rings and the outer cylinder. Through the arranged material lifting plates, it is convenient to guide the sand to be discharged from the discharge ports opened on the outer cylinder, the middle cylinder or the inner cylinder. Brief Description of the Drawings
[0017] Figure 1 is a three-dimensional schematic diagram of the present utility model.
[0018] Figure 2 is Figure 1 an enlarged schematic diagram of part A in
[0019] Figure 3 is a three-dimensional sectional view of the present utility model.
[0020] Figure 4 is Figure 3 an enlarged schematic diagram of part B in
[0021] Figure 5 is Figure 3 an enlarged schematic diagram of part C in Detailed Description of the Preferred Embodiment
[0022] Such as Figures 1 to 5As shown in the figure, a drying device for dry-mixed mortar includes an inner cylinder 1, a middle cylinder 2, and an outer cylinder 3 that are sleeved from the inside to the outside in sequence. Spiral blades 4 are arranged in the inner cylinder 1, the middle cylinder 2, and the outer cylinder 3. A support 5 is rotatably arranged on the outer cylinder 3, and a motor 6 for driving the outer cylinder 3 to rotate is arranged on the support 5. The motor 6 is used to drive the inner cylinder 1, the middle cylinder 2, and the outer cylinder 3 to rotate together. The spiral blades 4 are used to drive the sand to move. The rotation direction of the spiral blades 4 in the inner cylinder 1 is the same as that of the spiral blades 4 in the outer cylinder 3, and the rotation direction of the spiral blades 4 arranged in the middle cylinder 2 is opposite to that of the spiral blades 4 in the inner cylinder 1. When the inner cylinder 1, the middle cylinder 2, and the outer cylinder 3 rotate together, the conveying directions of the inner cylinder 1 and the outer cylinder 3 are the same, and the conveying directions of the inner cylinder 1 and the middle cylinder 2 are opposite to meet the need of three-pass conveying. Sealing rings 7 and sealing plates 8 are respectively arranged at both ends of the outer cylinder 3. Both ends of the outer cylinder 3, the middle cylinder 2, and the inner cylinder 1 are respectively installed on the sealing plate 8 and the sealing ring 7. A plurality of discharge ports 9 are opened at one end of the outer cylinder 3 and the inner cylinder 1 close to the sealing plate 8 and at one end of the middle cylinder 2 close to the sealing ring 7. The mortar conveyed in the outer cylinder 3 is discharged through the discharge ports 9 opened on the outer cylinder 3. The inner cavity of the outer cylinder 3 is communicated with the inner cavity of the middle cylinder 2 through the discharge ports 9 opened on the middle cylinder 2, and the inner cavity of the middle cylinder 2 is communicated with the inner cavity of the inner cylinder 1 through the discharge ports 9 opened on the inner cylinder 1. Thus, the conveyed sand is sequentially conveyed and dried through the inner cylinder 1, the middle cylinder 2, and the outer cylinder 3 to ensure the drying effect of the sand. A first guide cylinder 10 is arranged on the outer side of the sealing ring 7. A plurality of through grooves are opened at the edge of the sealing ring 7. The plurality of through grooves are equally spaced along the circumferential direction of the sealing ring 7 on the sealing ring 7. The first guide cylinder 10 is communicated with the outer cylinder 3 through the through grooves 11. A second guide cylinder 11 is sleeved inside the sealing ring 7. The second guide cylinder 11 is communicated with the inner cylinder 1. The second guide cylinder 11 is located inside the first guide cylinder 10 close to the sealing ring 7. Both the second guide cylinder 11 and the first guide cylinder 10 are installed on the sealing ring 7. The diameters of the first guide cylinder 10 and the second guide cylinder 11 gradually decrease in the direction away from the sealing plate 8. A feed pipe 12 is movably sleeved inside the second guide cylinder 11. A fixed pipe 13 is movably sleeved on the feed pipe 12. A bolt is threadedly sleeved on the side wall of the fixed pipe 13. The fixed pipe 13 is clamped on the feed pipe 12 through the bolt. A threaded hole is opened on the fixed pipe 13, and the threaded hole is threadedly sleeved on the bolt. The fixed pipe 13 is installed on the support 5. The first guide cylinder 10 is used to guide the sand into the outer cylinder 3, and the second guide cylinder 11 is used to guide the sand into the inner cylinder 1 to prevent the sand conveyed by the feed pipe 12 from falling out, thereby improving the sand conveying effect.Moreover, by adjusting the clamping position of the feed pipe 12 on the fixed pipe 13, it is possible to control the connection between the feed pipe 12 and the first material guiding cylinder 10 or the second material guiding cylinder 11, so that according to the moisture content of the mortar, the feed pipe 12 can be controlled to convey the mortar into the inner cylinder 1 or the outer cylinder 3. As a result, the sand with a lower moisture content is conveyed into the outer cylinder 3 through the feed pipe 12 for rapid drying, while the sand with a higher moisture content is conveyed into the inner cylinder 1 through the feed pipe 12, and the sand with a higher moisture content is dried through the inner cylinder 1, the middle cylinder 2 and the outer cylinder 3 to ensure the drying effect of the mortar.
[0023] In this embodiment, two protective shells 14 with one - side openings are movably sleeved on the outer cylinder 3. The open ends of the two protective shells 14 are respectively sleeved on both sides of the outer cylinder 3. The sealing plate 8 and the sealing ring 7 are respectively located inside the two protective shells 14, so as to protect the ends of the inner cylinder 1, the ends of the middle cylinder 2, the ends of the outer cylinder 3, the sealing plate 8 and the sealing ring 7. The fixed pipe 13 is installed on the protective shell 14 near the sealing ring 7. The inner cavity of the fixed pipe 13 is communicated with the inner cavity of the protective shell 14. An air inlet pipe 15 is inclinedly arranged on the side of the fixed pipe 13 away from the protective shell 14. The bottom end of the air inlet pipe 15 is installed on the side wall of the feed pipe 12. The inner cavity of the air inlet pipe 15 is communicated with the inner cavity of the feed pipe 12, so as to conveniently use the air inlet pipe 15 to convey hot air into the feed pipe 12. A discharge hopper 16 and an air outlet pipe 17 are respectively arranged on the protective shell 14 near the sealing plate 8. The top end of the discharge hopper 16 is located below the discharge port 9 opened on the outer cylinder 3. The air outlet pipe 17 is located above the outer cylinder 3. The air outlet pipe 17 and the discharge hopper 16 are both installed on the protective shell 14. The inner cavities of the air outlet pipe 17 and the discharge hopper 16 are both communicated with the inner cavity of the protective shell 14. The inner cavity of the discharge hopper 16 is communicated with the discharge port 9 opened on the outer cylinder 3 through the inner cavity of the protective shell 14, so that the sand discharged from the discharge port 9 opened on the outer cylinder 3 falls into the discharge hopper 16, and the sand is discharged through the discharge hopper 16. The hot air discharged from the discharge port 9 opened on the outer cylinder 3 is discharged through the inner cavity of the protective shell 14 and the inner cavity of the discharge hopper 16.
[0024] Specifically, the feed pipe 12 adopts an L - shaped structure. The vertical pipe of the feed pipe 12 is located on the side of the fixed pipe 13 away from the sealing ring 7 to facilitate using a conveyor to send the sand into the feed pipe 12. A discharge slot 18 is opened on the side of the feed pipe 12 near the sealing ring 7. The discharge slot 18 is opened at the bottom of the horizontal pipe of the feed pipe 12. A baffle plate 19 is arranged on the side of the discharge slot 18 near the sealing ring 7. The baffle plate 19 is installed on the feed pipe 12, so that the sand conveyed in the feed pipe 12 is discharged through the discharge slot 18 to improve the sand conveying effect.
[0025] In this embodiment, two roller rings 20 are sleeved on the outer cylinder 3. The two roller rings 20 are respectively installed on both sides of the outer cylinder 3. Frame 21 is provided on both sides of the roller ring 20. The frame 21 is installed on the support 5. A roller 22 is rotatably provided on the frame 21. The top of the roller 22 is in contact with the bottom of the roller ring 20. A rotating shaft is sleeved inside the roller 22. The rotating shaft is installed on the roller 22. A bearing is sleeved on the rotating shaft. The outer ring of the bearing is installed on the frame 21, and the inner ring of the bearing is installed on the rotating shaft. Thus, the roller 22 is rotatably installed on the roller ring 20, and further, the outer cylinder 3, the middle cylinder 2, and the inner cylinder 1 are rotatably provided on the support 5 through the roller ring 20 and the roller 22.
[0026] Specifically, limit wheels 23 are horizontally provided on both sides of the roller ring 20. The limit wheels 23 are in contact with the side surface of the roller ring 20. A fixed frame 24 is provided below the limit wheels 23. The fixed frame 24 is installed on the support 5. The limit wheels 23 are rotatably provided on the fixed frame 24. A bearing is sleeved inside the limit wheels 23. A fixed shaft is sleeved inside the bearing. The bottom of the fixed shaft is installed on the fixed frame 24, and the top of the fixed shaft is installed and sleeved on the inner ring of the bearing. The outer ring of the bearing is installed inside the roller 22. Thus, the limit wheels 23 are rotatably provided on the fixed frame 24, thereby restricting the left and right movement of the roller ring 20 to prevent the roller ring 20 from slipping off the roller 22.
[0027] Please refer to again Figure 1 and 2 As shown in, a toothed ring 25 is sleeved on the outer cylinder 3. A gear 26 is meshed with one side of the toothed ring 25. A speed reducer 27 is provided between the gear 26 and the motor 6. The gear 26 is installed on the transmission shaft of the speed reducer 27. The input shaft of the speed reducer 27 is connected to the driving shaft of the motor 6. The motor 6 and the speed reducer 27 are both installed on the bracket 28. The toothed ring 25 is located between the two roller rings 20. Thus, through the drive of the motor 6 and the transmission of the speed reducer 27, the gear 26 is driven to rotate, and further, the toothed ring 25, the outer cylinder 3, the middle cylinder 2, and the inner cylinder 1 are driven to rotate.
[0028] In this embodiment, a plurality of connecting plates 29 are provided between the roller ring 20 and the outer cylinder 3 and between the toothed ring 25 and the outer cylinder 3. The plurality of connecting plates 29 are evenly distributed along the circumferential direction of the outer cylinder 3 on the outer cylinder 3. The inner side of the connecting plate 29 is installed on the outer cylinder 3, and the outer side of the connecting plate 29 is installed on the toothed ring 25 or the roller ring 20, buffering the connection between the roller ring 20 or the toothed ring 25 and the outer cylinder 3 and avoiding hard contact between the roller ring 20 or the toothed ring 25 and the outer cylinder 3.
[0029] Please refer to again Figure 4, the several discharge ports 9 are evenly distributed along the circumferential direction of the outer cylinder 3 on the side walls of the outer cylinder 3, the middle cylinder 2 or the inner cylinder 1. The spiral blade 4 is located on one side of the discharge port 9, and a material lifting plate 30 is arranged between adjacent discharge ports 9. The material lifting plate 30 is installed on the inner wall of the outer cylinder 3, the middle cylinder 2 or the inner cylinder 1, so as to facilitate guiding the sand to be discharged from the discharge port 9 opened on the outer cylinder 3, the middle cylinder 2 or the inner cylinder 1.
[0030] The usage method of this product is as follows: As Figures 1 to 5 shown, first, use a pipeline to connect the air inlet pipe 15 and the air outlet pipe 17 to the hot air system to facilitate the transportation of hot air into this product. Connect the discharge end of the upper source conveying device and the feed pipe 13, and connect the discharge end of the discharge hopper 16 and the feed end of the lower source conveying device to facilitate the transportation of sand. Then, by starting the motor 6 and using the meshing of the gear ring 25 and the gear 26, the outer cylinder 3 rotates relative to the roller 22, thereby driving the inner cylinder 1, the middle cylinder 2, the spiral blade 4, the sealing ring 7, the sealing plate 8, the first guide cylinder 10 and the second guide cylinder 11 to rotate. By observing the rotation of the outer cylinder 3, it can be judged whether this product is in operation. Then, start the hot air system, the upper source conveying device and the lower source conveying device, so that the sand to be dried is sent into the second guide cylinder 11 through the upper source conveying device and the feed pipe 13, and is conveyed into the inner cylinder 1 by the second guide cylinder 11. The spiral blade 4 arranged in the inner cylinder 1 is used to lift and push the sand conveyed into the inner cylinder 1 to the discharge port 9 opened on the inner cylinder 1, so that the sand falls from the discharge port 9 opened on the inner cylinder 1 into the middle cylinder 2. Then, the spiral blade 4 arranged in the middle cylinder 2 is used to lift and push the sand conveyed into the middle cylinder 2 to the discharge port 9 opened on the middle cylinder 2, so that the sand falls from the discharge port 9 opened on the middle cylinder 2 into the outer cylinder 3. Finally, the spiral blade 4 arranged in the outer cylinder 3 is used to lift and push the sand conveyed into the outer cylinder 3 to the discharge port 9 opened on the outer cylinder 3, so that the sand falls from the discharge port 9 opened on the outer cylinder 3 into the discharge hopper 16, and then the dried sand is conveyed to the lower source conveying device through the discharge hopper 16 to facilitate continuous drying treatment of the sand. It should be noted that when the moisture content of the purchased sand is relatively low, by changing the fixed position of the feed pipe 12 on the fixed pipe 13 and clamping the feed pipe 12 on the fixed pipe 13 with bolts, the discharge slot 18 opened on the feed pipe 12 is communicated with the first guide cylinder 10, so that the sand to be dried is sent into the first guide cylinder 10 through the upper source conveying device and the feed pipe 13, and then conveyed into the outer cylinder 3 by the second guide cylinder 10, so as to only use the outer cylinder 3 to dry the sand to meet the drying adjustment needs.
[0031] In this embodiment, the motor 6 drives the inner cylinder 1, the middle cylinder 2 and the outer cylinder 3 to rotate together. The spiral blade 4 is used to lift and move the sand so as to dry the sand. Through the discharge ports 9 respectively opened on the inner cylinder 1, the middle cylinder 2 and the outer cylinder 3, it is convenient for the sand to be conveyed sequentially along the inner cylinder 1, the middle cylinder 2 and the outer cylinder 3, so as to increase the drying distance of the sand, thereby improving the drying effect of the sand. The first material guiding cylinder 10 and the second material guiding cylinder 11 are provided to guide the conveyance of the sand, so as to prevent the sand from falling out, thereby improving the sand conveyance effect. Moreover, in this embodiment, by adjusting the clamping position of the feed pipe 12 on the fixed pipe 13, it is possible to control the connection between the feed pipe 12 and the first material guiding cylinder 10 or the second material guiding cylinder 11, so that according to the moisture content of the mortar, the feed pipe 12 can convey the mortar into the inner cylinder 1 or the outer cylinder 3. The sand with a lower moisture content is conveyed into the outer cylinder 3 through the feed pipe 12 for rapid drying, while the sand with a higher moisture content is conveyed into the inner cylinder 1 through the feed pipe 12, so that the sand with a higher moisture content is dried through the inner cylinder 1, the middle cylinder 2 and the outer cylinder 3 to ensure the drying effect of the mortar.
[0032] The above-described embodiments are only preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent should be included in the scope of the patent application of the present invention.
Claims
1. A dry-mixed mortar drying device, comprising an inner cylinder (1), a middle cylinder (2) and an outer cylinder (3) which are sleeved in sequence from the inside to the outside. Spiral blades (4) are arranged in the inner cylinder (1), the middle cylinder (2) and the outer cylinder (3). A support (5) is rotatably arranged on the outer cylinder (3), and a motor (6) for driving the outer cylinder (3) to rotate is arranged on the support (5). It is characterized in that: Both ends of the outer cylinder (3) are respectively provided with a sealing ring (7) and a sealing plate (8). Both ends of the outer cylinder (3), the middle cylinder (2) and the inner cylinder (1) are respectively installed on the sealing plate (8) and the sealing ring (7). A plurality of discharge ports (9) are opened at one end of the outer cylinder (3) and the inner cylinder (1) close to the sealing plate (8) and at one end of the middle cylinder (2) close to the sealing ring (7). A first material guiding cylinder (10) is arranged on the outer side of the sealing ring (7). A plurality of through grooves are opened at the edge of the sealing ring (7). The first material guiding cylinder (10) is communicated with the outer cylinder (3) through the through grooves. A second material guiding cylinder (11) is sleeved inside the sealing ring (7). The second material guiding cylinder (11) is communicated with the inner cylinder (1). The second material guiding cylinder (11) is located inside the first material guiding cylinder (10) on the side close to the sealing ring (7). Both the second material guiding cylinder (11) and the first material guiding cylinder (10) are installed on the sealing ring (7). The diameters of both the first material guiding cylinder (10) and the second material guiding cylinder (11) gradually become smaller along the direction away from the sealing plate (8). A feed pipe (12) is movably sleeved inside the second material guiding cylinder (11). A fixed pipe (13) is movably sleeved on the feed pipe (12). A bolt is threadedly sleeved on the side wall of the fixed pipe (13). The fixed pipe (13) is clamped on the feed pipe (12) through the bolt. The fixed pipe (13) is installed on the support (5).
2. The dry-mixed mortar drying device according to claim 1, characterized in that: Two protective shells (14) with one side open are movably sleeved on the outer cylinder (3). The open ends of the two protective shells (14) are respectively sleeved on both sides of the outer cylinder (3). The sealing plate (8) and the sealing ring (7) are respectively located inside the two protective shells (14). The fixed pipe (13) is installed on the protective shell (14) close to the sealing ring (7). The inner cavity of the fixed pipe (13) is communicated with the inner cavity of the protective shell (14). An air inlet pipe (15) is inclinedly arranged on the side of the fixed pipe (13) away from the protective shell (14). The bottom end of the air inlet pipe (15) is installed on the side wall of the feed pipe (12). The inner cavity of the air inlet pipe (15) is communicated with the inner cavity of the feed pipe (12). A discharge hopper (16) and an air outlet pipe (17) are respectively arranged on the protective shell (14) close to the sealing plate (8). The top end of the discharge hopper (16) is located below the discharge port (9) opened on the outer cylinder (3). The air outlet pipe (17) is located above the outer cylinder (3). Both the air outlet pipe (17) and the discharge hopper (16) are installed on the protective shell (14). The inner cavities of both the air outlet pipe (17) and the discharge hopper (16) are communicated with the inner cavity of the protective shell (14).
3. The dry-mixed mortar drying device according to claim 1, characterized in that: The feed pipe (12) adopts an L-shaped structure. The vertical pipe of the feed pipe (12) is located on the side of the fixed pipe (13) away from the sealing ring (7). A discharge groove (18) is opened on one side of the feed pipe (12) close to the sealing ring (7). The discharge groove (18) is opened at the bottom of the horizontal pipe of the feed pipe (12). A baffle plate (19) is arranged on one side of the discharge groove (18) close to the sealing ring (7). The baffle plate (19) is installed on the feed pipe (12).
4. The dry-mixed mortar drying device according to claim 1, wherein: Two roller rings (20) are sleeved on the outer cylinder (3). The two roller rings (20) are respectively installed on both sides of the outer cylinder (3). Frame (21) are respectively arranged on both sides of the roller ring (20). The frame (21) is installed on the support (5). A roller (22) is rotatably arranged on the frame (21). The top of the roller (22) is in contact with the bottom of the roller ring (20).
5. The dry-mixed mortar drying device according to claim 4, characterized in that: Limit wheels (23) are respectively horizontally arranged on both sides of the roller ring (20). The limit wheels (23) are in contact with the side surface of the roller ring (20). A fixing frame (24) is arranged below the limit wheels (23). The fixing frame (24) is installed on the support (5). The limit wheels (23) are rotatably arranged on the fixing frame (24).
6. The dry-mixed mortar drying device according to claim 4, characterized in that: A gear ring (25) is sleeved on the outer cylinder (3). A gear (26) is meshed with one side of the gear ring (25). A speed reducer (27) is arranged between the gear (26) and the motor (6). The gear (26) is installed on the conveying shaft of the speed reducer (27). The input shaft of the speed reducer (27) is connected to the driving shaft of the motor (6). The motor (6) and the speed reducer (27) are both installed on the bracket (28).
7. The dry-mixed mortar drying device according to claim 6, wherein: A number of connecting plates (29) are arranged between the roller ring (20) and the outer cylinder (3) and between the gear ring (25) and the outer cylinder (3). The number of connecting plates (29) are equally spaced along the circumferential direction of the outer cylinder (3) on the outer cylinder (3). The inner side of the connecting plate (29) is installed on the outer cylinder (3). The outer side of the connecting plate (29) is installed on the gear ring (25) or the roller ring (20).
8. The dry-mixed mortar drying device according to claim 1, characterized in that: The number of discharge ports (9) are equally spaced along the circumferential direction of the outer cylinder (3) on the side walls of the outer cylinder (3), the middle cylinder (2) or the inner cylinder (1). The spiral blade (4) is located on one side of the discharge port (9). A material lifting plate (30) is arranged between adjacent discharge ports (9). The material lifting plate (30) is installed on the inner wall of the outer cylinder (3), the middle cylinder (2) or the inner cylinder (1).